Restructuring Program - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Dec. 31, 2024	Sep. 30, 2024
Restructuring Cost and Reserve [Line Items]
Foreign currency translation gain (loss)		$ (800)
Incremental restructuring charges incurred				$ 1,200
Restructuring charges	$ 47	$ 886	$ 933
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	25		79
Cost of Sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges	28		69
Other Non-operating Income (Expense)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(5)		785
Minimum
Restructuring Cost and Reserve [Line Items]
Historical restructuring costs, before tax	250		250
Maximum
Restructuring Cost and Reserve [Line Items]
Historical restructuring costs, before tax	$ 500		$ 500